Finding the Fourth Proportional to 154,176.40, 212,772.18 and 87,108.40
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Solution
The fourth proportional to 154,176.40, 212,772.18 and 87,108.40 is: 120,214.53
Step by Step Solution
- Step 1: Write the proportion equation
154,176.40 : 212,772.18 = 87,108.40 : x - Step 2: Convert to fraction form
154,176.40/212,772.18 = 87,108.40/x - Step 3: Cross multiply
154,176.40x = 212,772.18 × 87,108.40 - Step 4: Simplify right side
154,176.40x = 18,534,244,164.31 - Step 5: Solve for x
x = 18,534,244,164.31/154,176.40 - Step 6: Final answer
x = 120,214.53
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.